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authorHeikki Krogerus <heikki.krogerus@linux.intel.com>2013-10-16 13:53:43 +0300
committerJohannes Berg <johannes.berg@intel.com>2013-10-28 15:05:25 +0100
commitef91ffaa033001c2ba65d3c9659f1a75886d0aa3 (patch)
treef858ccc0b4b4c5eefe18cfbb79414bdfda85518c /net/rfkill
parent262c91ee5e524238d4dabf908c88f8518ed334ce (diff)
downloadlinux-stericsson-ef91ffaa033001c2ba65d3c9659f1a75886d0aa3.tar.gz
net: rfkill: gpio: add ACPI support
Including ACPI ID for Broadcom GPS receiver BCM4752. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Acked-by: Rhyland Klein <rklein@nvidia.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/rfkill')
-rw-r--r--net/rfkill/rfkill-gpio.c31
1 files changed, 30 insertions, 1 deletions
diff --git a/net/rfkill/rfkill-gpio.c b/net/rfkill/rfkill-gpio.c
index 2dd78c628d86..5620d3c07479 100644
--- a/net/rfkill/rfkill-gpio.c
+++ b/net/rfkill/rfkill-gpio.c
@@ -24,6 +24,8 @@
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/slab.h>
+#include <linux/acpi.h>
+#include <linux/acpi_gpio.h>
#include <linux/rfkill-gpio.h>
@@ -70,6 +72,23 @@ static const struct rfkill_ops rfkill_gpio_ops = {
.set_block = rfkill_gpio_set_power,
};
+static int rfkill_gpio_acpi_probe(struct device *dev,
+ struct rfkill_gpio_data *rfkill)
+{
+ const struct acpi_device_id *id;
+
+ id = acpi_match_device(dev->driver->acpi_match_table, dev);
+ if (!id)
+ return -ENODEV;
+
+ rfkill->name = dev_name(dev);
+ rfkill->type = (unsigned)id->driver_data;
+ rfkill->reset_gpio = acpi_get_gpio_by_index(dev, 0, NULL);
+ rfkill->shutdown_gpio = acpi_get_gpio_by_index(dev, 1, NULL);
+
+ return 0;
+}
+
static int rfkill_gpio_probe(struct platform_device *pdev)
{
struct rfkill_gpio_platform_data *pdata = pdev->dev.platform_data;
@@ -82,7 +101,11 @@ static int rfkill_gpio_probe(struct platform_device *pdev)
if (!rfkill)
return -ENOMEM;
- if (pdata) {
+ if (ACPI_HANDLE(&pdev->dev)) {
+ ret = rfkill_gpio_acpi_probe(&pdev->dev, rfkill);
+ if (ret)
+ return ret;
+ } else if (pdata) {
clk_name = pdata->power_clk_name;
rfkill->name = pdata->name;
rfkill->type = pdata->type;
@@ -170,12 +193,18 @@ static int rfkill_gpio_remove(struct platform_device *pdev)
return 0;
}
+static const struct acpi_device_id rfkill_acpi_match[] = {
+ { "BCM4752", RFKILL_TYPE_GPS },
+ { },
+};
+
static struct platform_driver rfkill_gpio_driver = {
.probe = rfkill_gpio_probe,
.remove = rfkill_gpio_remove,
.driver = {
.name = "rfkill_gpio",
.owner = THIS_MODULE,
+ .acpi_match_table = ACPI_PTR(rfkill_acpi_match),
},
};